The Potential of Ship Satellite Receivers in Detecting Landslide-Generated Tsunamis
Landslide-generated tsunamis pose a serious risk to coastal communities, especially in narrow fjords where tall cliffs can amplify waves. While scientists primarily rely on earthquake-based observation systems for tsunami warnings, these methods often overlook localized ground movement from landslides.
A groundbreaking study led by CIRES and CU Boulder researchers has demonstrated the ability to detect tsunami waves triggered by landslides using data from a ship’s satellite receiver. Published in Geophysical Research Letters, this research showcases the potential of this approach to enhance tsunami detection and warning systems, ultimately providing crucial information to coastal communities for disaster preparedness.
First-Time Detection of Landslide-Generated Tsunamis
Professor Anne Sheehan, a CIRES Fellow and Geological Sciences expert at CU Boulder, highlighted the significance of landslide-induced tsunamis, emphasizing their potential for large-scale destruction. The research team successfully captured tsunami waves generated by a landslide near Seward, Alaska, on May 8, 2022, using data from the R/V Sikuliaq’s external Global Navigation Satellite System (GNSS) receiver.
Lead researcher Adam Manaster, supported by scientists from the USGS and the University of Alaska Fairbanks, utilized the ship’s GNSS data to analyze changes in the vessel’s vertical position with centimeter-level precision. By comparing this data to a landslide-tsunami model, the team confirmed the first-ever detection of a landslide-generated tsunami using a ship’s satellite navigation system.
Enhancing Tsunami Early Warning Systems
The successful detection of landslide-generated tsunamis using ship satellite receivers represents a significant advancement in improving tsunami early warning systems. This research paves the way for faster and more accurate warnings to be issued to communities at risk, enabling prompt evacuation measures.
Building on previous CIRES-led studies that utilized GPS data from commercial shipping vessels for tsunami detection, this latest research underscores the effectiveness of integrating ship-based technology into disaster monitoring and response efforts.
Collaboration for Future Implementation
Professor Sheehan emphasized the need for collaboration with the shipping industry to expand the use of onboard satellite data for scientific research and tsunami warning systems. With the widespread availability of real-time GPS technology on ships, there is a clear opportunity to leverage this data for early detection and mitigation of natural disasters.
As the scientific community continues to explore innovative approaches to enhancing tsunami detection and warning systems, the integration of ship satellite receivers stands out as a promising solution for improving coastal safety and resilience in the face of landslide-generated tsunamis.